Is it possible to Use Network Analyzer as Spectrum Analyzer?

Hi friends...i am doing my project in the field of electromagnetic interference...i want to plot the spectrum of a signal received from a log periodic antenna... i don't have the facility of using the spectrum analyzer... is it possible to use a vector network analyzer (Model no - E5061A) as a spectrum analyzer...?pls help me.....?is it possible to use a vector network analyzer (E5061A) to capture signal from a antenna for a specific period of time and transfer the signal details to P.C in the form of a file....?